166226372 has 18 divisors (see below), whose sum is σ = 314995338. Its totient is φ = 76719552.

The previous prime is 166226353. The next prime is 166226399. The reversal of 166226372 is 273622661.

166226372 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 2027776 + 164198596 = 1424^2 + 12814^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 122273 + ... + 123624.

It is an arithmetic number, because the mean of its divisors is an integer number (17499741).

Almost surely, 2^166226372 is an apocalyptic number.

It is an amenable number.

166226372 is a deficient number, since it is larger than the sum of its proper divisors (148768966).

166226372 is a wasteful number, since it uses less digits than its factorization.

166226372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245927 (or 245912 counting only the distinct ones).

The product of its digits is 36288, while the sum is 35.

The square root of 166226372 is about 12892.8806711301. The cubic root of 166226372 is about 549.8361737961.

The spelling of 166226372 in words is "one hundred sixty-six million, two hundred twenty-six thousand, three hundred seventy-two".